The welcome rise of replication tests in economics has not been accompanied by a single, clear definition of replication. A discrepant replication, in current usage of the term, can signal anything from an unremarkable disagreement over methods to scientific incompetence or misconduct. This...

The immense literature on discrimination treats outcomes as relative: One group suffers compared to another. But does a difference arise because agents discriminate against others – are exophobic – or because they favor their own kind – are endophilic? This difference matters, as the...

The internet and other large textual databases contain billions of documents: is there useful information in the number of documents written about different topics? We propose, based on the premise that the occurrence of a phenomenon increases the likelihood that people write about it, that the...

Utilitarian foundations for limited government are shaky insofar as they assume rational and consistent individuals. Recently economists' assumption of rational actors has come under sustained attack. Behavioural economics has suggested that people are plagued by irrational biases and...